Zwei Vertreter des α-LiFeO2 Typs: LilnO2 und α-LiYbO2 [1, 2]

Two Representatives of the α-LiFeO₂ Type: LiInO₂ and α-LiYbO₂ Single crystals of LiInO₂ (well ground mixtures of ‘In₂O’: KO₂: Li₂O = 1:1.8:1, Ag-tube, 22d, 520°C); and α-LiYbO₂ (Yb₂O₃:Li₂O = 1:1.1, Ni-tube, 30d, 1150°C) were prepared for the first time from mixtures of the binary oxides. The determination of the structure confirmed the α-LiFeO₂ type. Both oxides crystallize in the space group I 4₁/amd (Z = 4); LiInO₂: a = 431.2(1) pm c = 934.2(2) pm; c/a = 2.167; 123 I_o(hkl), R = 3.6%, R_w = 2.9%. α-LiYbO₂:a = 438.7(1) pm c = 1006.7(2) pm; c/a = 2.295, 130 I_o(hkl), R = 4.4%, R_w = 3.6%. The Madelung part of lattice energy, MAPLE and characteristics of this kind of structure are discussed.